RRB Group D Mock Test - 26 - RRB Group D / RPF Constable MCQ

# RRB Group D Mock Test - 26 - RRB Group D / RPF Constable MCQ

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## 100 Questions MCQ Test RRB (Group D) Mock Tests & Previous Year Papers 2025 - RRB Group D Mock Test - 26

RRB Group D Mock Test - 26 for RRB Group D / RPF Constable 2024 is part of RRB (Group D) Mock Tests & Previous Year Papers 2025 preparation. The RRB Group D Mock Test - 26 questions and answers have been prepared according to the RRB Group D / RPF Constable exam syllabus.The RRB Group D Mock Test - 26 MCQs are made for RRB Group D / RPF Constable 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB Group D Mock Test - 26 below.
Solutions of RRB Group D Mock Test - 26 questions in English are available as part of our RRB (Group D) Mock Tests & Previous Year Papers 2025 for RRB Group D / RPF Constable & RRB Group D Mock Test - 26 solutions in Hindi for RRB (Group D) Mock Tests & Previous Year Papers 2025 course. Download more important topics, notes, lectures and mock test series for RRB Group D / RPF Constable Exam by signing up for free. Attempt RRB Group D Mock Test - 26 | 100 questions in 90 minutes | Mock test for RRB Group D / RPF Constable preparation | Free important questions MCQ to study RRB (Group D) Mock Tests & Previous Year Papers 2025 for RRB Group D / RPF Constable Exam | Download free PDF with solutions
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RRB Group D Mock Test - 26 - Question 1

### The average cost of 6 items in a shopping list is Rs.750. If one more item whose cost is Rs.400 is added to the list what will be the new average cost?

Detailed Solution for RRB Group D Mock Test - 26 - Question 1

Sum of price of 6 products = 750*6=4500
Sum after 1 more product worth 400 is added
= 4500+400
= 4900
Total number of products now = 6+1 = 7
Required Average = 4900/7 = 700

RRB Group D Mock Test - 26 - Question 2

### Who is the highest Law Officer of a State?

Detailed Solution for RRB Group D Mock Test - 26 - Question 2

An Advocate General is a senior officer of the law, usually charged with advising the courts or Government on legal matters. He is the highest Law Officer of a State.

RRB Group D Mock Test - 26 - Question 3

### The unique name of the combination of Analog and Digital computer is:

Detailed Solution for RRB Group D Mock Test - 26 - Question 3

Hybrid computers are computers that exhibit features of analog computers and Digital computers. The digital component normally serves as the controller and provides logical and numerical operations, while the analog component often serves as a solver of differential equations and other mathematically complex equations.

RRB Group D Mock Test - 26 - Question 4

Which of the following planet rotates clock wise?

Detailed Solution for RRB Group D Mock Test - 26 - Question 4

The planets orbiting the Sun counter clockwise and rotating on their axis counterclockwise.Venus would be rotating clockwise as it orbited the Sun counterclockwise.
Note: Venus' slowing spin isn't the only peculiar thing about its rotation. Venus is unique in our solar system for being the only planet that spins clockwise; all the other planets spin counter-clockwise. This effect, called "retrograde" rotation, is another mystery about Venus that has yet to be adequately solved

RRB Group D Mock Test - 26 - Question 5

If ‘-’ stands for addition, ‘+’ for multiplication, ‘÷’ for subtraction and ‘×’ for division, which one of the following equation is correct?

Detailed Solution for RRB Group D Mock Test - 26 - Question 5

5 ÷ 2 + 2 × 6 – 2 = 3

5 – 2 × 12 ÷ 6 + 2 = 3
⇒
5– 2 × 2 + 2 = 3

5 – 4 + 2 = 3

RRB Group D Mock Test - 26 - Question 6

What is the tenure of judges of the ‘International Court of Justice’?

Detailed Solution for RRB Group D Mock Test - 26 - Question 6

The International Court of Justice is composed of fifteen judges elected to nine-year terms by the UN General Assembly and the UN Security Council from a list of people nominated by the national groups in the Permanent Court of Arbitration.

RRB Group D Mock Test - 26 - Question 7

The present ages of Sumit and Mohit in the proportion 5: 4 respectively. Three years hence, the sum of their ages will be 60. What is Mohit’s present age?

Detailed Solution for RRB Group D Mock Test - 26 - Question 7

Let the present ages of Sumit and Mohit be 5x and 4x respectively.
Three years hence the ages of Sumit and Mohit be (5x + 3) and (4x + 3) respectively.
Then,
(5x +3) + (4x + 3) = 60
⇒9x + 6 = 60
⇒ x =6
Therefore, the present ages of Mohit is 24 years.
Hence, option (A) is correct.

RRB Group D Mock Test - 26 - Question 8

A rower can row a boat 56 km/h in downstream. Speed of current is 40% of speed of boat in still water what is time required for him to cover a distance of 40 km in upstream?

Detailed Solution for RRB Group D Mock Test - 26 - Question 8

Let Speed of boat in still water be 5 units
Speed of current = 40% of 5 units = 2 units
Speed of boat in downstream = 5+2 = 7 units
Speed of boat in upstream = 5-2 = 3 units
according to question:
7 units = 56 km/hr
1 unit = 8 km/hr
3 units = 24 km/hr
Time required to cover a distance of 40km with the upsteream speed of 24 km/hr
= 40/24
= 5/3 = 1 hrs

RRB Group D Mock Test - 26 - Question 9

Wilting of plants occurs due to excessive _________

Detailed Solution for RRB Group D Mock Test - 26 - Question 9

Wilting of plants occurs after excessive loss of water by transpiration and lesser absorption. On a hot day, plants transpire heavily and cannot absorb water speedily to keep pace with transpiration loss, even when there is enough water.

RRB Group D Mock Test - 26 - Question 10

Which organ of the human body is affected by tetanus disease?

Detailed Solution for RRB Group D Mock Test - 26 - Question 10

Tetanus is a serious bacterial infection that affects the nervous system and causes muscles throughout the body to tighten. It’s also called lockjaw because the infection often causes muscle contractions in jaw and neck.

RRB Group D Mock Test - 26 - Question 11

Which official of the Government of India has the right to speak in the houses of Parliament even though he is not a member of the Cabinet?

Detailed Solution for RRB Group D Mock Test - 26 - Question 11

The Attorney General of India has the right to speak in the houses of Parliament or in any committee even though he is not a member of
the Cabinet, but he has no right to vote
Attorney General is the first law officer of the Government of India, who give advice on legal matters.
At present K.K. Venugopal is the Attorney General of India.

RRB Group D Mock Test - 26 - Question 12

Raheem sells a machine for Rs 48 lakhs at a loss. Had he sold it for Rs 60 lakh, his gain would have been 5 times the former loss. Find the cost price of the machine.

Detailed Solution for RRB Group D Mock Test - 26 - Question 12

Let loss of x when sold at 48 lakhs, and profit of 5x when sold at 60 lakhs

so, 48lakh +x = 60lakh -5x
x=2lakh

CP = SP + loss =48lakh+2 lakh = 50 lakh

RRB Group D Mock Test - 26 - Question 13

A person deposits some amount at a certain rate of compound interest. If he got

Detailed Solution for RRB Group D Mock Test - 26 - Question 13

Let Principal (P) = 100
Amount (A) = 1.21*P = 1.21*100 = 121
Let rate of interest be x
A = P(1+x/100)2
121 = 100 [(100+x)/100]2
[(100+x)/100]2 = 121/100

RRB Group D Mock Test - 26 - Question 14

Maheshwar city is located on the bank of which river?

Detailed Solution for RRB Group D Mock Test - 26 - Question 14

Maheshwar (Mahismati) city is located along the bank of narmada river. Tewar (Tripuri) city is also located along the bank of narmada river.

RRB Group D Mock Test - 26 - Question 15

3 daily wage workers A, Band C are distributed Rs. 178 in such a way that A gets Rs. 4 less than C. B gets. Rs. 15 more than A and C gets Rs. 11 less than B. What is the ratio of their shares ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 15

Suppose A gets Rs. x
C gets Rs. x + 4
B gets Rs. x + 15
Now.

A => ₹ 53
B => 53 + 15 = ₹ 68
C => 53 + 4 = ₹ 57
Hence, option D is the right answer.

RRB Group D Mock Test - 26 - Question 16

The Arjuna Award were instituted in the year

Detailed Solution for RRB Group D Mock Test - 26 - Question 16

The Arjuna Awards are given by the Ministry of Youth Affairs and Sports, government of India to recognize outstanding achievement in National sports. Instituted in 1961, the award carries a cash prize of Rs 500,000, abronze statue of Arjuna and a scroll.

RRB Group D Mock Test - 26 - Question 17

The term "closure” in Parliamentary terminology implies

Detailed Solution for RRB Group D Mock Test - 26 - Question 17

The term "closure” in Parliamentary terminology implies stoppage of debate on a motion.
Hence, option B is correct.

RRB Group D Mock Test - 26 - Question 18

In CAMELS rating system M stands for ................

Detailed Solution for RRB Group D Mock Test - 26 - Question 18

In CAMELS rating system M stands for Management capability. The other component of CAMELS is:
(A)ssets
(M)anagement Capability
(E)arnings
(L)iquidity (also called asset liability management)
(S)ensitivity

RRB Group D Mock Test - 26 - Question 19

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

Detailed Solution for RRB Group D Mock Test - 26 - Question 19

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours.
Distance = speed × time = 60 × 15 = 900
If it covers the same distance in 12 hours. Its speed = 900/12 = 75 km/hr

RRB Group D Mock Test - 26 - Question 20

Which of the following treaties was signed to end the ‘Third Anglo-Mysore War’?

Detailed Solution for RRB Group D Mock Test - 26 - Question 20

The Treaty of Seringapatam was signed on 18 March 1792 between Lord Cornwallis and Tipu Sultan. It ended the Third Anglo-Mysore War.

RRB Group D Mock Test - 26 - Question 21

Sohan drove 15 km to the west from his house, then turned left and drove 20 km. He then turned left and drove 25 km and finally turning left covered 20 km. How far he is from his house?

Detailed Solution for RRB Group D Mock Test - 26 - Question 21

Distance between House and End point = 10km

RRB Group D Mock Test - 26 - Question 22

If x3 + y3 = 27 and x + y = 9 then is:

Detailed Solution for RRB Group D Mock Test - 26 - Question 22

RRB Group D Mock Test - 26 - Question 23

If the area of the circle has same area as that of cube. What will be the ratio of the radius of the circle to that of side of the cube?

Detailed Solution for RRB Group D Mock Test - 26 - Question 23

⇒ Let ‘r’ be the radius of the circle and ‘a’ be the side of the cube.
⇒ Now, Area of circle = πr2
⇒ Area of cube = 6a2

∴ r: a = √6: √π

RRB Group D Mock Test - 26 - Question 24

In the following question, select the odd word from the given alternatives.

Detailed Solution for RRB Group D Mock Test - 26 - Question 24

ARCHEOLOGY is the study of human history and prehistory through the excavation of sites and the analysis of artefacts and other physical remains.
PSYCHOLOGY is the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.
ANATOMY is the branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.
PHILOSOPHY is the study of the fundamental nature of knowledge, reality, and existence, especially when considered as an academic discipline. But in the option language is given.
Clearly, option D is  different from others.

RRB Group D Mock Test - 26 - Question 25

Which of the following chemical compounds are responsible for acid rain?

Detailed Solution for RRB Group D Mock Test - 26 - Question 25

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with wateroxygen, and other chemicals to form more acidic pollutants, known as acid rain.

RRB Group D Mock Test - 26 - Question 26

At which point of the Earth, there is no centrifugal force?

Detailed Solution for RRB Group D Mock Test - 26 - Question 26

There is no centrifugal force at the poles.

RRB Group D Mock Test - 26 - Question 27

Who was the main leader of the Bardoli Satyagraha?

Detailed Solution for RRB Group D Mock Test - 26 - Question 27

The Bardoli Satyagraha, 1928 was a major civil disobedience movement led by Sardar Vallabhai Patel for the farmers of Bardoli against the unjust raising of taxes.

RRB Group D Mock Test - 26 - Question 28

What is the capital of Colombia?

Detailed Solution for RRB Group D Mock Test - 26 - Question 28

Bogotá is the capital and largest city of Colombia administered as the Capital District, although often thought of as part of Cundinamarca.

RRB Group D Mock Test - 26 - Question 29

Which of the following elements are present in german silver?

Detailed Solution for RRB Group D Mock Test - 26 - Question 29

German silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. German silver is extensively used because of its hardness and resistance to corrosion. It was discovered by the German E.A. Geitner in the early 19th century.

RRB Group D Mock Test - 26 - Question 30

Article 368 of the Indian Constitution deals with

Detailed Solution for RRB Group D Mock Test - 26 - Question 30

Due to Article 368 the Indian Constitution can neither be called rigid nor flexible but in fact it is partly rigid and partly flexible. Amending the Constitution of India is the process of making changes to the nation's fundamental law or supreme law. The procedure of amendment in the constitution is laid down in Part XX (Article 368) of the Constitution of India.

RRB Group D Mock Test - 26 - Question 31

What is the least number which when divided by 2, 5, 7 and 9 leaves a remainder of 1 in each case?

Detailed Solution for RRB Group D Mock Test - 26 - Question 31

LCM (2, 5, 7, 9 ) = 630
The smallest number which leaves remainder 1 when divided by 2, 5, 7, and 9
= 630+1 = 631

RRB Group D Mock Test - 26 - Question 32

The rate at which banks borrow from the RBI is called-

Detailed Solution for RRB Group D Mock Test - 26 - Question 32

Repo rate is the rate at which RBI lends to its clients generally against government securities

RRB Group D Mock Test - 26 - Question 33

Find the wrong number in the series.
225, 206, 188, 176, 165, 158, 153

Detailed Solution for RRB Group D Mock Test - 26 - Question 33

It is clear that, after subtract the next number from the first number, we get the prime consecutive prime numbers with –ve sign in descending order. Thus, we should replace 188 by 189 in the given series.
Hence, B is odd one.

RRB Group D Mock Test - 26 - Question 34

Salary of a person first increased by 17% then decreased by 15%, find the change in salary.

Detailed Solution for RRB Group D Mock Test - 26 - Question 34

RRB Group D Mock Test - 26 - Question 35

Which state does not share a common border with Haryana?

Detailed Solution for RRB Group D Mock Test - 26 - Question 35

Madhya Pradesh state does not share a common border with Haryana. Haryana is bordered by Punjab and Himachal Pradesh to the north, and by Rajasthan to the west and south. The river Yamuna defines its eastern border with Uttar Pradesh. Haryana surrounds the country's capital Delhi on three sides, forming the northern, western and southern borders of Delhi.

RRB Group D Mock Test - 26 - Question 36

Which among the following is the largest (gland) part of the body?

Detailed Solution for RRB Group D Mock Test - 26 - Question 36

From the given option Liver is the largest part of the body. Liver is the largest gland of the human body.

RRB Group D Mock Test - 26 - Question 37

Pooja Kadian is associated with which sports?

Detailed Solution for RRB Group D Mock Test - 26 - Question 37

Pooja Kadian has created history by becoming the first Indian to clinch a gold medal at Wushu World Championships in the 75 kilogram women Sanda category after defeating Evgeniya Stepanova in the final at Kazan on October 5, 2017

RRB Group D Mock Test - 26 - Question 38

Detailed Solution for RRB Group D Mock Test - 26 - Question 38

The Upanishads are a collection of ancient Sanskrit texts that contain some of the central philosophical concepts of Hinduism, some of which are shared with Buddhism, Jainism, and Sikhism. They are among the most important literature in the history of Indian religions and culture. The Upanishads played an important role in the development of spiritual ideas in ancient India, and they marked a transition from Vedic ritualism to new ideas and institutions. Early Upanishads are considered by Hindus as part of their scriptures that discuss the nature of ultimate reality and the character of and path to spiritual liberation.

RRB Group D Mock Test - 26 - Question 39

Who is known as Gandhi of Bihar?

Detailed Solution for RRB Group D Mock Test - 26 - Question 39

Dr. Rajendra Prasad is known as Gandhi of Bihar.

RRB Group D Mock Test - 26 - Question 40

Who among the following has been appointed as the new Secretary General of Amnesty International?

Detailed Solution for RRB Group D Mock Test - 26 - Question 40

The human rights activist of South Africa) Kumi Naidoo has been appointed as the new Secretary General of Amnesty International. He will replace Indian activist Salil Shetty. Kumi Naidoo born in Durban was formally International Executive Director of Greenpeace.
Note: Amnesty International is the largest human rights movement globally. The headquarters is in London, United Kingdom.

RRB Group D Mock Test - 26 - Question 41

Who among the following has been sworn in as new Chief Minister of Gujarat?

Detailed Solution for RRB Group D Mock Test - 26 - Question 41

Vijay Rupani has been sworn in as new Chief Minister of Gujarat and Nitin Patel as Deputy Chief Minister. The oath of office was administered by Gujarat’s Governor O P Kohli. In Gujarat elections, BJP had won 99 seats in the 182-member house.

RRB Group D Mock Test - 26 - Question 42

What least value which should be added to 1812 to make it divisible by 7, 11 and 14?

Detailed Solution for RRB Group D Mock Test - 26 - Question 42

A number which is divisible by 7, 11 and 14 will also be divisible by 154 (i.e., LCM of 7, 11 and 14). Dividing 1812 by 154, we get remainder as 118.
Therefore, we need to add (154 – 118 = ) 36 to make 1812 divisible by 7, 11 and 14.

RRB Group D Mock Test - 26 - Question 43

In the following question, select the odd letter from the given alternatives.

Detailed Solution for RRB Group D Mock Test - 26 - Question 43

Hence, option A is different from others.

RRB Group D Mock Test - 26 - Question 44

In the following question, select the odd word pair from the given alternatives.

Detailed Solution for RRB Group D Mock Test - 26 - Question 44

Battalion is a group of soldiers.
Principal is the head of school.
Troupe is a group of artists.
Chorous is a large group of singers.
Hence, option B is different from others.

RRB Group D Mock Test - 26 - Question 45

At certain rate of simple interest a sum becomes triple in 25 years. In how many years will it become six times of itself?

Detailed Solution for RRB Group D Mock Test - 26 - Question 45

Let the principle be Rs. 100
⇒ Time = 25 years
⇒ Amount = Rs. 300
⇒ Interest = (300 – 100) = Rs. 200
⇒ Rate =

⇒ Now, amount = Rs. 600
⇒ Interest = (600 – 100) = Rs. 500
⇒ Time =

∴ Total time required = 62 years 6 months

RRB Group D Mock Test - 26 - Question 46

How many languages are recognized in the 8th Schedule of the Indian Constitution?

Detailed Solution for RRB Group D Mock Test - 26 - Question 46

India has 22 official languages. According to Census of India, the total number of mother tongues spoken in India is 1652. However, only around 150 languages have a sizable speaking population. The Indian census of 1961 recognised 1,652 different languages in India (including languages not native to the subcontinent). 22 official languages are 1) Assamese, (2) Bengali, (3) Gujarati, (4) Hindi, (5) Kannada, (6) Kashmiri, (7) Konkani, (8) Malayalam, (9) Manipuri, (10) Marathi, (11) Nepali, (12) Oriya, (13) Punjabi, (14) Sanskrit, (15) Sindhi, (16) Tamil, (17) Telugu, (18) Urdu (19) Bodo, (20) Santhali, (21) Maithili and (22) Dogri.

RRB Group D Mock Test - 26 - Question 47

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
13, 14, 30, 93, 376, (?)

Detailed Solution for RRB Group D Mock Test - 26 - Question 47

13,       14,        30,        93,       376,     (1885)

From the above series, it is clear that option D is the correct answer.

RRB Group D Mock Test - 26 - Question 48

If then  is

Detailed Solution for RRB Group D Mock Test - 26 - Question 48

then

Here

then

RRB Group D Mock Test - 26 - Question 49

Arrange the following words as per order in the dictionary.
1) Exploit
2) Explosive
3) Exponent
4) Exposition
5) Explore

Detailed Solution for RRB Group D Mock Test - 26 - Question 49

As per order in the dictionary, the correct order is
1. Exploit,

5. Explore,

2. Explosive,

3. Exponent ,

4. Exposition

RRB Group D Mock Test - 26 - Question 50

If the day before yesterday was Friday, what day will two days after the day after tomorrow be?

Detailed Solution for RRB Group D Mock Test - 26 - Question 50

If the day before yesterday was Friday, it means yesterday was Saturday and today is Sunday. Tomorrow will be Monday day after tomorrow will be Tuesday and two days after the day after tomorrow will be Thursday.

RRB Group D Mock Test - 26 - Question 51

Study of cell nucleus and chromosomes is known as.

Detailed Solution for RRB Group D Mock Test - 26 - Question 51

karyology is known as the study of cell nucleus and chromosomes.
Mycology - Study of Fungi
Sarcology - Study of Muscles
Orthopedics - Diagnosis and repair of bone, joints etc.

RRB Group D Mock Test - 26 - Question 52

Who among the following has won the first gold medal of the Khelo India School Games 2018 in 1500 metres under girl category in New Delhi?

Detailed Solution for RRB Group D Mock Test - 26 - Question 52

C Chanthini has won the first gold medal of the Khelo India School Games 2018 in 1500 metres under girl category in New Delhi. Anu Kumar has won the first gold medal of the Khelo India School Games 2018 in 1500 metres under boy category.

RRB Group D Mock Test - 26 - Question 53

The head office of World Bank is located in?

Detailed Solution for RRB Group D Mock Test - 26 - Question 53

Washington, D.C., U.S.
The World Bank is an international financial institution formed in July 1945 that provides loans to countries of the world for capital programs headquartered in Washington, D.C., U.S.

RRB Group D Mock Test - 26 - Question 54

A cistern has two pipes. One can fill it with water in 8 h and other can empty it in 5 h. In how many hours will the cistern be emptied if both the pipes are opened together when ¾ of the cistern is already full of water?

Detailed Solution for RRB Group D Mock Test - 26 - Question 54

Part of cistern emptied in 1 h

RRB Group D Mock Test - 26 - Question 55

Which of the following state has become the first state to opt out of ‘National Health Protection Scheme (Modicare)?

Detailed Solution for RRB Group D Mock Test - 26 - Question 55

West Bengal has become the first state to opt out of ‘National Health Protection Scheme’ also known as ‘Modicare’ which has been announced in the Union Budget 2017-18. Chief Minister of West Bengal Mamta Banerjee said that the NHPS is similar to West Bengal’s existing ‘Swasthya Sathi’ scheme.

RRB Group D Mock Test - 26 - Question 56

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
DKY, FJW, HIU, JHS, ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 56

Hence, option D is the correct response.

RRB Group D Mock Test - 26 - Question 57

Tulsidas wrote Ramcharita ­manas during the reign of

Detailed Solution for RRB Group D Mock Test - 26 - Question 57

Tulsidas wrote Shri Ram ­ Charit-Manas during the reign of Mughal Emperor Akbar.
Tulsidas started writing this greatest Hindu 'Granth' on the birth day of Lord Shree Ram, i.e. Chaitra Navmi (9th day of Hindu month Chaitra) in year 1574. The life span of Akbar is 1556 - 1605.

RRB Group D Mock Test - 26 - Question 58

Who was the first railway minister of independent India?

Detailed Solution for RRB Group D Mock Test - 26 - Question 58

John Mathai was an economist who served as India's first Railway Minister from 15 August 1947 to 22 September 1948. He was also the first chairman of the State Bank of India when it was set up in 1955.
Note: Asaf Ali :- He was in charge of the Railways and Transport in the Interim Government of India headed by Jawaharlal Nehru from 2 September 1946 to 14 August 1947.

RRB Group D Mock Test - 26 - Question 59

Why does sun appear red at sunrise and sunset?

Detailed Solution for RRB Group D Mock Test - 26 - Question 59

According to Rayleigh’s law of scattering, the intensity of a scattering light of a particular wavelength is inversely proportional to the fourth power of its wavelength
The wavelength of red colour is large hence it is least scattered. Therefore, light rays other than red is mostly scattered. Most of the red light, which is least scattered enters our eyes. Hence, the sun appears red at sunrise and sunset.

RRB Group D Mock Test - 26 - Question 60

Prime Minister Narendra Modi has inaugurated the Rajasthan’s first Oil Refinery in which of the following District of the state?

Detailed Solution for RRB Group D Mock Test - 26 - Question 60

Prime Minister Narendra Modi has inaugurated the Rajasthan’s first Oil Refinery at Pachpadra, Barmer District of the state. The project is the joint venture between HPCL and Rajasthan Government. The project is expected to generate 10,000 direct and 40,000 indirect employments.

RRB Group D Mock Test - 26 - Question 61

Which instrument is used to measure relative density?

Detailed Solution for RRB Group D Mock Test - 26 - Question 61

hydrometer is an instrument that measures the specific gravity (relative density) of liquids - the ratio of the density of the liquid to the density of water.

RRB Group D Mock Test - 26 - Question 62

Sush and Leher can do a job together in 7 days. Sush is 7/4 times as efficient as Leher. The same job can be done by Sush in:

Detailed Solution for RRB Group D Mock Test - 26 - Question 62

Ratio of efficiency of Sush and Leher = 4:7
Total work = Total efficiency*Total time = (4+7)*7 = 11*7 =77
Time required by Sush = 77/7 = 11 days

RRB Group D Mock Test - 26 - Question 63

In the following question, select the related number from the given alternatives.
Octagon : 64 :: Heptagon : ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 63

An Octagon has eight sides. The square of 8 is 64. Similarly, a heptagon has seven sides. The square of 7 is 49. So it is the correct answer.

RRB Group D Mock Test - 26 - Question 64

Which of the following has become first city in India to get its own identity badge/logo?

Detailed Solution for RRB Group D Mock Test - 26 - Question 64

Brand Bengaluru’s own logo was launched ‘Namma Bengaluru Habba Festival’, at Vidhan Soudha, in Bengaluru. The logo is red and black and written partially in English and Kannada. The tagline states: ‘Bengaluru-Be U’. This logo aims to promote the image of Bengaluru at the global level.

RRB Group D Mock Test - 26 - Question 65

Which of the following is not a vector quantity?

Detailed Solution for RRB Group D Mock Test - 26 - Question 65

In physics, some quantities such as temperature, masslengthvolume, and density possess only “magnitude”. Other quantities such as force, velocity, displacement and acceleration possess both magnitudeand direction. Those quantities which possess only magnitude are referred to as scalar quantities; those which have both magnitude and direction are referred to vector quantities.

RRB Group D Mock Test - 26 - Question 66

In ΔABC, ∠ 1/2 A + ∠ B + ∠ C = 110 °. Calculate the measure of ∠A?

Detailed Solution for RRB Group D Mock Test - 26 - Question 66

⇒ We know that, sum of all angles of triangle is 180 °
⇒ ∴ ∠ A + ∠ B + ∠ C = 180
∠ 1/2 A + ∠ B + ∠ C = 110
⇒ Subtract equations, we get
∠ A/2 = 70
⇒ ∠ A = 140 °

RRB Group D Mock Test - 26 - Question 67

If the salary of a manager is 60000 RS and salary of an engineer is 60% of the manager. And the sum of the salary of a manager and engineers is 7.8 lakh. Find the number of engineers in the company.

Detailed Solution for RRB Group D Mock Test - 26 - Question 67

Salary of the manager = 60000 RS
Salary of an engineer =

Let there are N engineers
∴(manager’s salary + N* engineer’s salary) = 780000
(60000 + N*36000) = 780000

N = 720000/36000
N = 20
Number of engineers = 20

RRB Group D Mock Test - 26 - Question 68

World Peace Day is observed on which date?

Detailed Solution for RRB Group D Mock Test - 26 - Question 68

The International Day of Peace, sometimes unofficially known as World Peace Day, is a holiday observed annually on 21 September. It is dedicated to world peace, and specifically the absence of war and violence,such as might be occasioned by a temporary ceasefire in a combat zone for humanitarian aid access.

RRB Group D Mock Test - 26 - Question 69

Which of the following chemicals is responsible for artificial ripening of fruits?

Detailed Solution for RRB Group D Mock Test - 26 - Question 69

Ethylene is also an important natural plant hormone, and is used in agriculture to force the ripening of fruits.

RRB Group D Mock Test - 26 - Question 70

If Atul finds that he is twelfth from the right in a queue of boys and fourth from the left, how many boys should be added to the queue so that there are 28 boys in the queue?

Detailed Solution for RRB Group D Mock Test - 26 - Question 70

From formula,
Total number of boys in the queue
= Atul's rank from left + Atul's rank from right – 1
= 12 + 4 – 1 = 15
Total number of boys that should be added = 28 – 15 = 13
Hence, option B is correct.

RRB Group D Mock Test - 26 - Question 71

In the following question, select the word which cannot be formed using the letters of the given word.
INTELLIGENCE

Detailed Solution for RRB Group D Mock Test - 26 - Question 71

Since C is used two times and A is used in the word CANCEL which is not there in the original word.
Hence, option C is correct

RRB Group D Mock Test - 26 - Question 72

In the following question, select the related letters from the given alternatives.
GFED : TSRQ : : KJIH : ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 72

Hence, option C is the right answer.

RRB Group D Mock Test - 26 - Question 73

Which Viceroy of India proposed the Vernacular Press Act?

Detailed Solution for RRB Group D Mock Test - 26 - Question 73

In British India, the Vernacular Press Act (Act of 1878) was enacted to curtail the freedom of the Indian pressand prevent the expression of criticism toward British policies—notably, the opposition that had grown with the outset of the Second Anglo-Afghan War (1878–80). The act was proposed by Lord Lytton, then Viceroy of India, and was unanimously passed by the Viceroy's Council on March 14, 1878.

RRB Group D Mock Test - 26 - Question 74

When was the Ibrahim Lodi became the Sultan of Delhi?

Detailed Solution for RRB Group D Mock Test - 26 - Question 74

Ibrahim Lodi became the Sultan of Delhi in 1517 after the death of his father Sikandar Lodi
He was the last ruler of the Lodi dynasty, reigning for nine years between 1517 until being defeated and killed at the battle of Panipat by Babur's invading army in 1526, giving way to the emergence of the Mughal Empire in India.

RRB Group D Mock Test - 26 - Question 75

In the following question, a series is given, with two terms missing. Choose the correct alternative from the given ones that will complete the series.
Y X Z X W Y W V X V ? ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 75

Hence, option C is the right answer.

RRB Group D Mock Test - 26 - Question 76

The first woman of Indian origin who undertook a space journey

Detailed Solution for RRB Group D Mock Test - 26 - Question 76

Kalpana Chawla was an Indian American astronaut and the first women of Indian origin in space.

RRB Group D Mock Test - 26 - Question 77

Which one of the following is a ‘Surface to Air Missile’?

Detailed Solution for RRB Group D Mock Test - 26 - Question 77

Trishul is a short range surface-to-air missile developed by India.It was developed by Defence Research and Development Organisation as a part of the Integrated Guided Missile Development Program.

RRB Group D Mock Test - 26 - Question 78

Rana walks 20 m straight in north direction and 20 m to the right. Then every turning to his left he walks 5, 25 and 25 metres respectively. How far is he from his starting point now?

Detailed Solution for RRB Group D Mock Test - 26 - Question 78

The movement of Rana is shown in the figure below.

He is 5m away from his starting point.

RRB Group D Mock Test - 26 - Question 79

Curved surface area of a cylinder is 528 sq cm. If circumference of its base is 44 cm, ﬁnd the height of the cylinder?

Detailed Solution for RRB Group D Mock Test - 26 - Question 79

Curved surface area = 2πrh = 528 cm2
Circumference = 2πr = 44 cm
H =
= 528/44 = 12 cm

RRB Group D Mock Test - 26 - Question 80

In which State is ‘Silent Valley’ located?

Detailed Solution for RRB Group D Mock Test - 26 - Question 80

Silent Valley National Park is a national park with a core zone of 236.74 square kilometres (91 sq mi) (making it the largest national park in Kerala). It is located in the Nilgiri Hills, within the Palakkad District of Kerala,South India. This region was explored in 1847 by the botanist Robert Wight, and is a setting for the epicMahabharatha.

RRB Group D Mock Test - 26 - Question 81

Raju is Raman’s paternal uncle, whose paternal grandfather has only two children, one of whom is Kiran’s brother-in-law. Raman is not the son of kiran. How is Raju related to Kiran?

Detailed Solution for RRB Group D Mock Test - 26 - Question 81

RRB Group D Mock Test - 26 - Question 82

Who is the author of the book titled 'The Indian War of Independence’?

Detailed Solution for RRB Group D Mock Test - 26 - Question 82

‘The Indian War of Independence’ is an Indian nationalist history of the 1857 revolt by Vinayak Damodar Savarkar that was first published in 1909.

RRB Group D Mock Test - 26 - Question 83

Instrument used to study the behavior of a vibrating string is :

Detailed Solution for RRB Group D Mock Test - 26 - Question 83

A Sonometer is a device for demonstrating the relationship between the frequency of the sound produced by a plucked string, and the tension, length and mass per unit length of the string. These relationships are usually called Mersenne’s laws after Marin Mersenne (1588-1648), who investigated and codified them.

RRB Group D Mock Test - 26 - Question 84

5 years ago the average age of a family which includes father, mother and a son was 35 years. 3 years ago the average age of father and mother was 46 years. What is the present age (in years) of the son?

Detailed Solution for RRB Group D Mock Test - 26 - Question 84

5 years ago, average age of father, mother and son = 35 years
Therefore, sum of their present ages = 35 × 3 + 5 × 3
= 120 years
Also, 3 years ago, sum of ages of father and mother = 46 years
Then, their present ages = 46 × 2 + 6
= 98 years
Thus, present age of the son = 120 – 98
= 22 years

RRB Group D Mock Test - 26 - Question 85

‘Yellow Revolution’ is associated with the production of:

Detailed Solution for RRB Group D Mock Test - 26 - Question 85

The growth, development and adoption of new varieties of oilseeds and complementary technologies nearly doubled oilseeds production from 12.6 mt in 1987-88 to 24.4 mt in 1996-97, catalyzed by the Technology Mission on Oilseeds, brought about the Yellow Revolution.

List of All Revolutions:

Black Revolution – Petroleum Production
• Blue Revolution – Fish Production
• Brown Revolution – Leather/non-conventional(India)/Cocoa production
• Golden Fibre Revolution – Jute Production
• Golden Revolution – Fruits/Overall Horticulture development/Honey Production
• Green Revolution – Food grains
• Grey Revolution – Fertilizer
• Pink Revolution – Onion production/Pharmaceutical (India) /Prawn production
• Red Revolution – Meat & Tomato Production
• Round Revolution – Potato
• Silver Fiber Revolution – Cotton
• Silver Revolution – Egg/Poultry Production
• White Revolution (In India: Operation Flood) – Milk/Dairy production
• Yellow Revolution – Oil Seeds production
• Evergreen Revolution – Overall development of Agriculture

RRB Group D Mock Test - 26 - Question 86

Which Himalayan Peak is also called ‘Sagar Matha’?

Detailed Solution for RRB Group D Mock Test - 26 - Question 86

Mount Everest, also known in Nepal as Sagarmatha and in Tibet as Chomolungma, is Earth's highest mountain. It is is Earth's highest mountain. It is located in the Mahalangur mountain range in Nepal. Its peak is 8,848 metres (29,029 ft) above sea level.

RRB Group D Mock Test - 26 - Question 87

Shramshakti express crosses the Yamuna river bridge and a man standing near the bridge in 27 seconds and 8 seconds respectively. If the spped of train is 54km/hr. find the length of the Yamuna river bridge.

Detailed Solution for RRB Group D Mock Test - 26 - Question 87

Length of train = 54×8× 5/18=120 m
The length of bridge + train = 54×27× 5/18 = 405m
Required
The length of the bridge = 405-120 =285m

RRB Group D Mock Test - 26 - Question 88

If 23 x 16 = 184, 37 x 10 = 185  then 85 x 12 = ?

Detailed Solution for RRB Group D Mock Test - 26 - Question 88

As, 23 x 16 = 368 and 368/2 = 184
37 x 10 = 370 and 370/2 = 185
Similarly, 85 x 12 = 1020 and 1020/2 = 510
Hence, option C is the right answer.

RRB Group D Mock Test - 26 - Question 89

If 'BASKET' is written as 'TEKSAB' how can 'PILLOW' be written in that code?

Detailed Solution for RRB Group D Mock Test - 26 - Question 89

By analysing we find that writing all letter of word 'BASKET' from left to right, we get 'TEKSAB'. Similarly, writing all letter of word 'PILLOW' from left to right, we get WOLLIP.

RRB Group D Mock Test - 26 - Question 90

Who is known as the 'Birdman of India'?

Detailed Solution for RRB Group D Mock Test - 26 - Question 90

Sálim Moizuddin Abdul Ali was an Indian ornithologist and naturalist. Sometimes referred to as the 'Birdman of India'.
Salim Ali was among the first Indians to conduct systematic bird surveys across India and wrote several bird books that popularised ornithology in India.

RRB Group D Mock Test - 26 - Question 91

The first postage stamp was issued in

Detailed Solution for RRB Group D Mock Test - 26 - Question 91

In 1837 Indian Postal system started off as a public service under the Act of 1837, regulating the post office for the first time so as to unite them on a uniform basis with a view to uniting the organisation spanning across the three Presidencies. The first postage stamp was issued in Karachi in 1852.

RRB Group D Mock Test - 26 - Question 92

If √2 sin(5x+5º) = Tan45º. Then find the value of x.

Detailed Solution for RRB Group D Mock Test - 26 - Question 92

2 sin(5x+5º) = Tan45º
sin(5x+5º) =
∴5x+5º= 45º
x = 8º

RRB Group D Mock Test - 26 - Question 93

Humayun’s Tomb is located in _________.

Detailed Solution for RRB Group D Mock Test - 26 - Question 93

Humayun’s Tomb is located in Delhi. Humayun's tomb is the tomb of the Mughal Emperor Humayun in Delhi, India. The tomb was commissioned by Humayun's first wife and chief consort, Empress Bega Begum, in 1569-70, and designed by Mirak Mirza Ghiyas, a Persian architect chosen by her.

RRB Group D Mock Test - 26 - Question 94

Two numbers are in the ratio of 4 : 7. If 6 is subtracted from the numerator and 3 from the denominator. Then the new ratio becomes 1 : 2. Find the sum of numerator and denominator.

Detailed Solution for RRB Group D Mock Test - 26 - Question 94

Let the number be 4x and 7x respectively.
A.T.Q.

Hence the numbers will be 36 and 63.
Required sum = 36+63=99.

RRB Group D Mock Test - 26 - Question 95

In the following question, select the missing number from the given alternatives.

Detailed Solution for RRB Group D Mock Test - 26 - Question 95

First Column
2 x 8 + 6=22
and, 22-10= 12
Second Column
3 X 6+ 3 = 21 and,
21-9 = 12
Third Column
4 X 9 + 5 = 41
and, 41-29= 12
Hence, option D is the right answer.

RRB Group D Mock Test - 26 - Question 96

Who was the first Indian to receive the Magsaysay award?

Detailed Solution for RRB Group D Mock Test - 26 - Question 96

In 1958 Vinoba was the first recipient of the international Ramon Magsaysay Award for Community Leadership. He was awarded the Bharat Ratna posthumously in 1983. Hence, option D is correct.

RRB Group D Mock Test - 26 - Question 97

Which is the largest tea producing country of the world?

Detailed Solution for RRB Group D Mock Test - 26 - Question 97

here are the 5 top tea-producing nations in the world.

• 5 – Turkey (174,932 tonnes) ...

• 4 – Sri Lanka (295,830 tonnes) ...

• 3 – Kenya (303,308 tonnes) ...

• 2 – India (900,094 tonnes) ...

• 1 – China (1,000,130 tonnes)
RRB Group D Mock Test - 26 - Question 98

The diameter of a circle is 28 cm find its area?

Detailed Solution for RRB Group D Mock Test - 26 - Question 98

Given that, diameter = 28 cm
Now, area of the circle = π r2
= (22/7) × 142
= 616 sq. cm

RRB Group D Mock Test - 26 - Question 99

Which of the following is the capital of Myanmar?

Detailed Solution for RRB Group D Mock Test - 26 - Question 99

The capital of Myanmar is Naypyidaw.

Some facts related to Myanmar

1. Myanmar was formerly known as Burma.

2. Myanmar is bordered by India and Bangladesh to its west, Thailand and Laos to its east and People's Republic of China to its north and northeast.

3. Yangon (Rangoon) former capital is the largest city of Myanmar.

4. The currency of Myanmar is Kyat.

RRB Group D Mock Test - 26 - Question 100

Ram is elder than Shyam, Lakshman is elder than Shyam, but younger than Ram. Hanuman is younger than both Hari and Shyam. Shyam is elder than Hari. Who is the youngest?

Detailed Solution for RRB Group D Mock Test - 26 - Question 100

Ram > Lakshman > Shyam …. (i)
Shyam > Hari > Hanuman … (ii)

Ram > Lakshman > Shyam> Hari > Hanuman

From both statements
Hanuman was the youngest.